Latch mechanism



Feb. 2, 1954 F. R. COLLAR ET AL 2,668,073

LATCH MECHANISM Filed Feb. 27, 1951 FQflfi/K 2. 60461949, JRC'KC. MTG/ 62A,

INVENTORS.

BY Qua/l ermavn Patented Feb. 2, 1954 LATCH MECHANISM Frank R. Collar,

Los Angcles, and Jack C. Mitchell, La Crescenta,

Calif., assignors to Adams Rite Manufacturing Company, Glendale, Calif., a corporation of California Application February 27, 1951, Serial No. 212,971 2 Claims. (01. 292-192) The present invention relates generally to looks, and is more particularly concerned with a door lock for use with folding accordion type doors, sliding doors, and the like.

It is one object of the preesnt invention to provide a lock structure of simple, compact construction, having a small number of moving parts, and which may be economically manufactured.

A further object has to do with the provision of a novel lock structure having a shielded reciprocally mounted bolt arranged to be protracted from a shielded position into interlocking engagement with a keeper, andwhich will be deadlocked in the keeper interlocking position.

Another object of the herein described invention is to provide a uniqu keeper interlocking mechanism which is automatically moved into interlocking and released positions with respect to the keeper in response to protraction and retraction movements of the bolt.

Further objects of the invention will be brought out in the following part of the specification, wherein detailed description isfor the purpos of fully disclosing theinvention without placing limitations thereon.

Referring to the accompanying drawings, which are for illustrative purposes only:

Fig. 1 is a side elevational view of a lock embodying the features of the present invention;

Fig. 2 is an edge elevational view of the same;

Fig. 3 is a sectional view, portions being broken away to show certain details, the bolt being in retracted position, taken substantially on line 33 of Fig. 2';

Fig. 4 is a view similar to Fig. 3, except that the lock is shown with the boltin protracted keeper engaging position, and is locked against opening; and

Fig. 5 is an enlarged fragmentary view illustrating the operative action of the bolt keeper engaging jaws.

Referring now to the drawings, the lock structure of the present invention is shown as being embodied in an enclosing casing, as generally indicated by the numeral l0, having spaced apart side walls II and I2.

The side wall II, as shown in Figs. 2 and 3 is deformed along a marginal edge to provide spaced apart face mounting flanges l3 and II which respectively are provided with mounting screw receiving apertures l5 by which the casing and associated lock mechanism may be mounted in a door edge.

Between the flanges 3 and M, the wall H is extended and turned back upon itself to provide a U-shaped projecting portion l6 which forms a shield for one end of the lock bolt I! which will hereinafter be described in detail. The transverse configuration of the projecting portion I6 is such that it will conform with the shape of an abutment strip placed along the door edge.

The bolt l! is of laminated construction, being composed of side plates l8 and I9, having a straight portion 26 at one end and an integrally formed U-shaped portion 2| at its other end which defines a side opening recess 22. The plates I8 and I 9 are held in spaced apart relation by means of a spacer plate 23, as shown in Fig. 5, which generally conforms to the U-shaped end portion 2| of the side plates. The side plates are secured to the spacer plate by conventional means, and in the present instance is shown as being spot welded at spaced points as indicated by the numeral 24.

The bolt I1 is supported for reciprocal movement in the casing, spaced pins 25-25 being carried by the side plates l8 and 9, these pins being arranged to extend into an adjacent slot 26 of the side wall II or |2 as the case may be. Thus, the bolt is positioned with its straight end portion 20 extending into the projecting portion It,

the bridging portion thereof being provided with a slot 2'! through which the end portion 26 may be moved to protractile and retractile positions.

In the straight portion 2|! of the bolt, between the spaced plates I8 and I9, right and left hand keeper engaging jaws28a and 28b are mounted.

These jaws are of similar construction, each hav-' ing divergent arms '29 and 30 extending outwardly from a pivot pin 3| placed intermediate the ends of the jaw. As shown in Fig. 5, the arm 29 is laterally extended in its edge margin to form a hook defining tooth 3|. The arm 30 is laterally extended in the direction of the tooth 3! to form a rounded protuberance 32, the tooth 3| and protuberance 32 being spaced apart and cooperating to form a notch or recess 33 therebetween.

The two jaws are mounted in back-to-back position with their teeth 3|3| extending outwardly in opposite directions. spring 34 is anchored at its midportion bya pin 35 extending between the adjacent portions of A wing shaped 5 to occupy a position projecting laterally of said U-shaped recessed portion when said arm is in said position normal to said shoulder; a locking member supported by said casing in a position adjacent said recessed portion of said bolt and so as to be movable toward and away from said recessed portion, said locking member having a shouldered portion positioned so as to engage said arm member when it is in said position projecting laterally of said recessed portion, and to thereby lock said rotatable arm in said position normal to said shoulder.

FRANK R. COLLAR.

JACK C. MITCHELL.

References Cited in the file of this patent Number Number UNITED STATES PATENTS 

